Welt insole and method of making



Oct. 26, 1943. E. A. ELLIS WELT INSOLE AND METHOD OF MAKING Filed Nov.23, 1942 Fig.5.

a a ////AV/////V// 14 ,3 g?

flexibility in the resultant shoe.

Fig. 3 is a cross-sectional view on the line 3--3 of Fig. 2;

Fig. 4 is a fragmentary View showing a narrow reinforcing tape and thelip-turning partially performed;

Fig. 5 is a cross-sectional view on the line 5-5 of Fig. 4; v

Fig. 6 is a cross-sectional view on the line 6-6 of Fig. 4 extendingclear across the insole, and

Fig. '7 illustrates in cross-section a completed insole of Fig. 3 withthe optional gemming added.

'Fig. 8 is a fragmentarry view illustrating a strip reinforcing insteadof gemming.

Referring to the drawing, an insole blank I stock, preferably leather,of as thin a stock as two irons. Thus, I may utilize leather splits forthe insole, using a four-iron insole and splitting same in two. It isusually considered that three. and one-half or four irons is as thin aleather insole as can be employed for Welt chanequal to that from theedge of the insole to the line ofinner channeled cut, and this tape may.be [coated or uncoated on either or both. sides. 'Preferably'I coat themargin of the insole with adhesive, as shown at 2; then apply the tape3, which tape is also coated on its under side, thus insuring goodadhesion or cohesion with the margin of the insole, and then perform thechannel-cutting operation, which would include splitting in a cut 4 fromthe marginal edge and simultaneously forming the inner channel cut 5.Thereupon the upper surface of the tape 3 is coated with adhesive, asindicatedat 6, either after such applying, or pre-coated and thereuponthe channel lip-turning operation is performed, folding the tape 3together as the channeled lips I and 8 are forced together, thus forminga sewingrib with the reinforcing tape 3 on the inside, and the channeledlips 1 and 8 on the'outside, andall constituting a stronglaminated'sewing rib of a plurality of layers, with the reinforcing onthe inside.

In order to insure the reinforcing tape 3 extending at the base of thesewingrib to insure the inseaming operation to engage the tape, I mayindent the between substance l0, viz., between the channel cuts 4 and 5,by pressing or aesaees shown of suitablecontour and size desired, which,may be formed of extremely thin channelab-le cutting a groove I2therein, into which groove the reinforcing tape 3 will be forced whenapplied to the margin of the insole, as shown in Fig. 5.

I may attach the center of the tape by a line of stitching, as shown at2!], Fig. 8, which stitching would be applied while the tape 3 is flat,and either with the adhesive or without same, this still furtherinsuring the holding of the tape snugly in the base of the groove andstrengthening the between substance.

This may leave the edge of the tape slightly shorter than the channeledlips I and 8, as shown at It and l 4, and when the channeled lip-turningoperation is performed the outermost edges improved weltinsole can, ofcourse, be gemmed j if desired by adding the usual gemmed duck 15 acrossthe entire Widthlof the insolefand against the inside ofQmycompositesewing rib. Or a strip reinforcing can be applied, as shown atH5 at the rightofFig. 8. f i U a 'Ifclaim:

1. A welt insole of the kind described, having a reinforced compositesewing rib formed of a pair of continuous channeled lips cut from themarginal po'rtion offan insole blank, adhesively united with two layersof the reinforcing element, said element being fitted between saidcontinu- .ous channele'dlips, and all said four'layers beingfadhesivfelyunited into a reinforcing sewing rib, witha portion of thereinforcing element extending substantially to the depth of the line ofcut fo-rmingsa'idlips. I

2. .Ifhe improved process of making a welt insole Withar'einforcedlse'wing rib, which consists in coating the marginal portionof the insole blank with adhesive, formingan indentation parallel withthe marginal edge of the blank, and in position to be between the innerand outer channel'ed li'psjto be cut therefrom, cutting said lips,adhesively securing a' reinforcing tape in said indentation and to bothsaid lips before the lipturning operation, providing adhesive to theupper surface of said tape, and thereupon turning said lips andattachedlayers of tape into a com posite sewing rib structure with a pluralityof layers, having the tape on the inside of the rib constituting fourupstanding rib layers adhesively secured together. ELMER A. ELLIS.

